diff --git a/internal/hook/hook.go b/internal/hook/hook.go
index 394dd79..4597c94 100644
--- a/internal/hook/hook.go
+++ b/internal/hook/hook.go
@@ -394,14 +394,22 @@ func GetParameter(s string, params interface{}) (interface{}, error) {
 			return v, nil
 		}
 
-		// Checked for dotted references
-		p := strings.SplitN(s, ".", 2)
-		if pValue, ok := params.(map[string]interface{})[p[0]]; ok {
-			if len(p) > 1 {
-				return GetParameter(p[1], pValue)
+		// Check for dotted references
+		p := strings.Split(s, ".")
+		ref := ""
+		for i := range p {
+			if i == 0 {
+				ref = p[i]
+			} else {
+				ref += "." + p[i]
+			}
+			if pValue, ok := params.(map[string]interface{})[ref]; ok {
+				if i == len(p)-1 {
+					return pValue, nil
+				} else {
+					return GetParameter(strings.Join(p[i+1:], "."), pValue)
+				}
 			}
-
-			return pValue, nil
 		}
 	}
 
diff --git a/internal/hook/hook_test.go b/internal/hook/hook_test.go
index cbc49f7..d459334 100644
--- a/internal/hook/hook_test.go
+++ b/internal/hook/hook_test.go
@@ -231,6 +231,8 @@ var extractParameterTests = []struct {
 	{"b", map[string]interface{}{"b": map[string]interface{}{"z": 1}}, `{"z":1}`, true},
 	{"c", map[string]interface{}{"c": []interface{}{"y", "z"}}, `["y","z"]`, true},
 	{"d", map[string]interface{}{"d": [2]interface{}{"y", "z"}}, `["y","z"]`, true},
+	{"a.b.c.1", map[string]interface{}{"a": map[string]interface{}{"b": map[string]interface{}{"c.1": "z"}}}, "z", true},
+	{"a.b.1.c", map[string]interface{}{"a": map[string]interface{}{"b.1": map[string]interface{}{"c": "z"}}}, "z", true},
 	// failures
 	{"check_nil", nil, "", false},
 	{"a.X", map[string]interface{}{"a": map[string]interface{}{"b": "z"}}, "", false},                                                      // non-existent parameter reference